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Python String | startswith() method with Examples

Python String startswith() method with Examples on capitalize(), center(), count(), encode(), find(), format(), index(), join(), lower(), ljust(), isupper(), istitle(), isspace(), isprintable(), isnumeric(), islower() etc.

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Python String startswith() Method

Python startswith() method returns either True or False. It returns True if the string starts with the prefix, otherwise False. It takes two parameters start and end. Start is a starting index from where searching starts and end index is where searching stops.

Signature

startswith(prefix[, start[, end]])

Parameters

prefix : A string which is to be checked.

start : Start index from where searching starts.

end : End index till there searching performs.

Both start and end are optional parameters.

Return

It returns boolean value either True or False.

Let's see some examples of startswith() method to understand it's functionality.

Python String startswith() Method Example 1

Let's first create a simple example which prints True if the string starts with the prefix.

# Python String startswith() method
# Declaring variable
str = "Hello TheDeveloperBlog"
# Calling function
str2 = str.startswith("Hello")
# Displaying result
print (str2)

Output:

True

Python String startswith() Method Example 2

If the string does not start with prefix, the method returns False. See the example below

# Python String startswith() method
# Declaring variable
str = "Hello TheDeveloperBlog"
# Calling function
str2 = str.startswith("Java") # False
# Displaying result
print (str2)

Output:

False

Python String startswith() Method Example 3

This method takes three parameters. The start and end index are optional. Here, we are passing start index only.

# Python String startswith() method
# Declaring variable
str = "Hello TheDeveloperBlog"
# Calling function
str2 = str.startswith("Java",6)
# Displaying result
print (str2)

Output:

True

Python String startswith() Method Example 4

It returns true if the string lie between start and end index starts from the prefix. An example is created to describe the process.

# Python String startswith() method
# Declaring variable
str = "Hello TheDeveloperBlog"
# Calling function
str2 = str.startswith("Java",6,10)
# Displaying result
print (str2)
str2 = str.startswith("Java",8,12)
# Displaying result
print (str2)

Output:

True
False

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